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Cloud deployment models

The second term we will look at is cloud deployment models.

Cloud deployment models describe the way in which resources are provided in the cloud.

Which cloud deployment models are available?

Let's look at the following diagram first:

The deployment model based on the on-premises service model is called the private cloud. A private cloud is an environment/infrastructure, built and operated by a single organization, which is only for internal use.

In the context of this book, you should know that the Windows Azure Pack (a free add-on for the Windows server) gives you the opportunity to deploy Azure technologies in a private cloud environment.

The deployment model based on the IaaS and the PaaS service model is called the public cloud. A public cloud is an offer from a service provider (for example, Microsoft Azure), that can be accessed by the public. This includes individuals as well as companies.

Note: When we talk about Azure in this book, it always means the public cloud model.

There is still a third deployment model available, which is the hybrid cloud. A hybrid cloud combines parts of the private and public clouds. It is defined as a private cloud environment at the consumer's site, as well as the public cloud infrastructure that the consumer uses.

In the context of this book, you should know that Azure Stack (a new offering from Microsoft) gives you the opportunity to build a hybrid cloud environment:

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